Nut machine



July 12,1927. 1,635,238

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R. L. WILCOX NUT MACHINE July 12, 1927.

Filed Aug. 9, 1924 6 SheetsrSheet 6 I 'HIIWHHHII t? in stares ATENTOFFlOEQ' RICHARD LESTER WILCOX, OF WATERBURY, CONNECTICUT, ASSIGNOR TOTHE WATERBURY BARREL FOUNDRY AND MACHINE COMPANY, OF WATERZBURY, CON--T.\TECTICUT', A CORPORATION OF CONNECTIGU T.

NUT MACHINE.

Application filed August 9, 1924. Serial No. 731,151.

My invention relates to a new and improved machine for making nuts andother articles having an opening therethrough as well as the means andmethods by which such nuts and articles are produced.

It is the object of this invention among other things, to automaticallyproduce from cold stock nuts and other articles having an openingtherethrough, by a method" wherein there are the minimum number ofoperations and waste of material, if'any, and to provide mechanismwhereby these desirable results may be obtained, that may be readilyadapted for use in a heading, upsetting machine or the like of wellknown and conventional form. f

To these and other ends my invention consists in the method and meansfor making nuts and articles having an opening therethrough and tomechanism for producing these results having certain details ofconstruction and combinations of parts as Wlll be heremafter'flescr bedand more particularly pointed out in claims.

numerals of reference designate like parts,

Referring-to the drawings, in which like in the several figures;

Figure 1 is a fragmentary plan view of.

vations of the stripping mechanism with,

the piercing punch shown in two of its relative positlons therewith:

Figure 7 is an enlarged front elevation of the stripper head;

Figure 8 is a fragmentary view of the front portion of one of the pairof dies showing a wire rod therein just before (the. first, or upsettingoperation;

Figure 9 is a front elevation of the upset ting dies; f

Figure 10 1s a view similar to Figure S showing in sect-ion the forwardend of the rod after the first upsetting operation has been performedthereon;

Figure 11 is an end View thereof and also the dies;

Figure 12 is a view similar to Figure 10 showing in sectional view thepartially completed blank after the operation of the nipping punchthereon; 7

Figure 13 is a front View thereof and also the dies;

Figure 14: is a view of one of the dies with a portion of the wire rodtherein, in the position placed by the piercing punch and ready to beadvanced for the next set of operations thereon.

Figures 15 and 16 are front and side elevations respectively of theupsetting punch;

Figures 17 and 18 are front and side elevations respectively, of thenipping punch;

Figures 19 and 20 are front and side elevations respectively of thepiercing punch, having in the latter View a section of a nut as itappears when removed from the dies;

Figure 20 is a cross section on the line 2020 of Fig. 13;

Figure 21, views of several forms of nuts and articles that may beproduced by my improved method and mechanism;

Flgure 22 is an enlarged front elevation of the stripper head having atrimming die connected therewith Figure 23 is a fragmentary plan viewthereof;

Figure 24 1s a fragmentary side elevationthereof; and

Figure 25 is an elevation of the punch block with a nut thereon inengagement with the pressure die.

In this invention, an article is formed upon the end'of a wire rod andthen a hole formed therein of substantially the same size and crosssection as that of the wire rod f by forcing the same rearwardly fromthe article so that the portionof the rod formerly forming the center ofthe article still remains a part thereof, to become a portion of thenext succeeding'article formed. Asherein shown, the article is formed onthe I end of a wire rod circular in cross section,

vantage if the shape and form of the articles to be produced are morereadily adapted for such rod structure. Thus a succession of articles isproduced from a single rod without waste of material or at least anywaste of substantial amount.

In the embodiment ofthe means herein disclosed, whereby my new andimproved method is practiced, I disclose the same as associated with aheading, upsettin machine or the like, the body of which is designated10 having a gate 11 movable therein, a punch slide 12 which isvertically movable in the gate and receiving motion from a rock shaft 13through a connection mechanism 14, of any well known type but forming nopart of this invention. In one end of the body 10 is a pocket 15 withinwhich is mounted a die block 16 having a cap or cover 17 hinged theretoand between which is movably mounted the dies 18. The wire is fed intothe machine by a feed mechanism 19 havin as a part thereof the rolls 20and 21 whic derive an intermittent rotary movement from the shaft 13through the link 22 that is connected at one end to'an arm 23 on therock shaft 13 and at the other end with the rock arm 24 on the sameshaft as the feed roll 21. The wire rod 25 is advanced between the diesby the rolls 20 and 21 through the quill 26 and the back of the dieblock 16 as isusual, its innermost position being determined by themovable stop 27. The dies are closed in the die block by the togglemechanism 28.

A, All of the mechanism above described is old and well known in the artand requires no further detailed description herein, with the exceptionofthe link joint between the link 22 and rock arm 24 which is part ofthis invention. The end of this link, projects between the ears 34 uponthe rock arm 24 and is slidably connected therewith by a pin 29 whichprojects through a slot 30 inthe link. A spring 31 between the post 32inthe rock arm 24 and post 33 in the link exerts its extension so as tohold the pin at that end of the slot nearest the arm 23, as shown inFigure 4. Thus the parts are so located relatively that the wire rod 25may be advanced into the machine between the dies by the feed rolls. Aslight reverse movement of these feed rolls is permissible by the actionof the wire rod thereon and fora urpose hereinafter to be de-' scribed,at which time th-epin 29 will travel dies are so shaped and associatedas to form ahexagonalnut. The upsetting punch 36 has a'hexagonal face 41and of substantially the same dimensions as that of the finished nut,with a conical tip 42 concentric therewith, and an annular recess 43surrounding the face 41. The nipping punch 37 is constructed with arecess-44 in its face that is substantially the same shape in crosssection as that of the finished nut, and surroundin this recess is adepression 45, the

inside wall of which is tapered downwardly away from the face of thenipping punch so as to form a knife edge, substantially as shown inFigure 18. In operation the wire nut is hexagonal in shape, the metalflows I over the face of the dies substantially as shown in Figure 11,which overflow is accommodated in' the annular recess 43 of the punch36. This overflow will not occur if the cavity 46 in the dies is round.The base of the ti 42 is substantially the same diameter as t e holethrough the finished nut and preferably is of such length that theointed end thereof passes into the blank, a istance equal to thethickness of the finished nut. It can, with equal facility, if desired,project into the blank, a distance greater or less than the thickness ofthe nut, this dej pending in some measure upon the character of thematerial from which the articles are made as well as its hardness andvolume of material to be upset by the operations.

The nipping punch 37 is next moved for-' ward until its front facealmost engages the face of the dies 18, thus scoring the blank andparticularly the fin or'flash 49 formed around the edge thereof at 50.This scoring insures the breaking of the fin or flash from the blank atthe outer edges thereof and upon a line coincident with the side facesof thefinished nut, so, that when broken ofi,

there is no rough or unfinished edge at the point of the break.Thereafter the piercing 'punch 39, th'e'tip 51 of which issubstantiallythe same diameter as the wire rod 25 and the hole 52 of the finishedblank 53, is advanced so the end thereof passes throughthe blank to apoint below the bottom .of the cavity 46, that is a distance greaterthan the thickness of the nut. During this action of the piercing punchthe stock in front of the tip 51 is forced, rearwardly out of-the blankto a position substantially as shown in Figure 14. The feed rolls20 and21. permit this f rearward movement of the wire rod 25 by reason of theslip connection between the punch 39 I have provided an annular groove52 of limited depth and into which the metal of the blank flows duringthe piercing operation sufficient to hold the same on the punch when itis withdrawn from the dies. Then the blank 54 remains on the piercingpunch, a cross section of which is shown in Figure 20. The means bywhich the dies 18 are held together during this upsetting operation isso timed that they open slightly at the same instant as the piercingpunch 39 starts to pierce the hole in the nut, which allows the wire rodto be readily pushed back between the dies, and the instant the piercingpunch starts to withdraw, the dies are opened further for the purpose offreeing the contact on the outer surface of the nut in the cavity of thedies so that the nut will readily be withdrawn on the punch out of thecavity in the dies. Fixed below the dies 18 is a stripper mechanismcomprising a frame 55 having a rearwardly projecting plate 56 thereonthrough which one or more screws 57 pass to separably secure the frameto a fixed part.

Slidably mounted in the frame 55 in radial paths around a common centerare three slides 58 that are moved inwardly bya spring 59 secured at oneend. I The inner ends of these stripper slides are so formed that whenin their innermost positions and in contact with each other an hexagonalopening 60 is formed therebetween' of the same size, or slightly lessthan that of the finished nut and formed with an open flaring throat 61.This stripper mechanism is located directly below the dies so that whenthe upsetting punch is brought into. contact with the end of theawirerod 25, the nut forn'ied by the previous operations of the punches, nowupon the piercing punch" 39, is projected through the opening 60. Whilepassing therethrough the flash or' fin 49 thereon is broken off at thescoring line and, the ruptured surface is smoothed over and planished bythe side walls of the hexagonal opening 60, the spring 59 yieldingslightly to permit this motion. On the return movement of the gate andthe piercing 'punch 39 the rear face of the nut engages the rear squareedges of the slide 58 and strips the same froln the punch. The nut nowbeing free, drops through the channel 62 in the rear of the stripperframe as shown in Figure 6, into a box orreceptacle, convenientlyarranged to receive it.

e In Figure 21 T have shown four of many shaped articles, as samples ofthe work that may be produced by my improved method and mechanism. Inall cases the cavity 46 inthe dies, and the opening 60 inthe strippermechanism are shaped to correspond with that ofthe finished article. Ifthe article is round there will be no flash or fin and the nipping punchmay be omitted.

By this method and mechanism, the upsetting of the metal and thepiercing of the hole are accomplished by individual and separate solidpunches and blows, the small amount of surplus metal projecting out ofthe cavity in the dies is nipped or reducedin thickness directly aroundthe edge of the said cavity to facilitate the breaking off of the verysmall pieces of scrap. The third blow is that of piercing the hole anddriving the wire rod back between the dies, as

the article ismade on the end of the wire rod and integral therewithuntil the hole is pierced, which severs the wire rod from the nut. Theopening of the dies is important for two reasons :first, itv allows thewire rod to be readily pushed back, and secondly, it frees the clingingcontact the outer surface of the nut would naturally have in the recessof the dies, so that as the piercing punch returns, the nut will bewithdrawn on the punch out of the cavity in the. dies. The punches arethen lowered so that the upsetting punch is again in line with the wirerod. In the meantime this wire rod is advanced sufiiciently to make thenext nut and the gate with the punches is advanced and while upsettingthe wire rod the last formed nut or blank is pushed through the strippermechanism which removes the flash or fin and also strips it off thepiercing punch on its return.

The method of making the nut with a small amount of flash and.oversupply of metal for the cavity in the dies preserves the life of thedies and punches. If the punch. should enter the cavity absolutelytight, which would be necessary to prevent the for' mation of a flash orfin, it would burst. the dies, or breakthe punch. Therefore, in theupsetting operation the punch does not enter the 'cavity in the dies,and any little variation of the amount of metal upset will be' takencare of-in a flash which is only a trlfle "in amount but by reasonthereof extends the.

life of'the-tools' and increases the efiiciency thereof.

- 'For some classes of work it is desirable At times, with some kinds ofmetal and especially after the dies have been used for some time, aslight fin is formed upon the face of the nut where the dies meet.Usually this fin is so slight as to be unobje'ctionable and is readilyremoved by a subsequent tumbling process. However, I provide means in myimproved machine to remove this fin without additional movement of, any,of the parts. This means comprises a die '67 that has an opening thereinto allow for the movement of the end of the punch 39, held in the frame55 by the screw 68, or the like, and provided with a work face 69. Thisdie 67 is so positioned that the work face is held in alignment with thefin on the face of the nut, which contacts therewith and is compressedthereby, so that the face of the. nut

is thereby made entirely smooth. While I and by the dies, to fill saidcavity and at the have shown this die 67 as associated with the frame 55in Figures 22, 23 and 24, to which the trimming die 63 is secured, it isobvious that it maybe associated equally as well with the frame 55, asillustrated in Figures 5, 6 and 7.

Having described my invention, what, I claim as new and desire to secureby Letters Patent, is:

1. In an apparatus of the character described; companion dies 0 movabletoward and away fro each oth'er,in the outer face of which is cavity,and extending rearwardly therethrough from the bottom of the cavity isan opening of substantially the same cross section as the rod from whichthe articles are produced; a punch for upsetting the projecting portionof a rod held between same time form a depress-ion in the outer face ofthe upset portion ;.and another punchseparate from the one firstmentioned for extending the said depression and thereby forming a holein'the upset portion of the rod within the cavity that forces thematerial engaged thereby longitudinally between the said dies'withoutsevering the same from the rod, said dies being held together underlateral pressure while the first mentioned punch is in engagementwithth'e rod and separated slightly when the second mentioned punch isforming the opening.

2. In an apparatus of the character described; companion dies movabletoward and away from each other, in the outer face of which is a cavity,and extending rearwardly therethrough from the bottom of the cavity isan opening of substantially the same cross section as the rod from whichthe articles face of the upset portion; and another punch separate fromthe one first mentioned for extending the said depression and therebyforming a hole in the upset portion of the rod within the cavity thatforces the, material engaged thereby longitudinally between the saiddies without severing the same from the rod or enlarging the diameterthereof,

said dies being held together underlateral pressure while the firstmentioned punch is in engagement with the rod and separated i slightlywhen the second mentioned punch is forming the opening.

3. In an apparatus of the character described; a palrof dies movabletoward and away from each other that form a'separable workholder, in theouter face of which is a closed cavity when the dies are in contact witheach other, and extending rearwardly therethrough from the bottom of thecavity is an opening of substantially the same cross section as the rod,from which the articles are produced; a punch for upsetting theprojecting portion of a rod held rigidly between the dies to fill saidclosed cavity and form a depression in the outer face of the upsetportion of the rod within such cavity, this depression being ofsubstantial relative depth and displacing a portion of the rod necessaryto form the hole through the finished article; and another punchseparate from the one first mentioned for extending the said depressionand thereby forming a hole in the upset portion of the rod withinsuchcavity that forces the material engaged thereby and'the rod betweenthe dies rearwardly and away from the cavity without securing the samefrom the rod, said dies being held together under lat- "eral pressureduring the upsetting of the rod end and separated a limited distancewhile the hole is being formed in the upset por; tion, the'diameter ofthe rod end after the action of the second punch thereon, that is in andbetween the dies, being the same as before the upsetting operation.

.4. In mechanism of the character described; a pair of dies movabletoward and away from each other having a cavity in .their outer faces; apunch for upsetting the projecting portion of the rod held between andby the dies against endwise -movement so that the same will fill saidcavity; an-

other punch forforming an opening 1n said upset portion, ofsubstantially the same diameter as the/rod, that forces thematerialengaged thereby longitudinally between the dies without severing thesame from the rod or enlarging the diameter thereof, the dies being'heldso that lateral pressure is applied to the rod while the first mentionedpunch is engaging the rod and separated slightly when the secondmentioned punch is forming the opening; and means for.

scoring the flash or fin upon the upset portoo accuses tion, if any,while the upset portion is still in said cavity; and means for removingfrom the article such scored flash or fin after,

having been. taken from said cavity.

5.1n mechanism of the character described; a pair of dies, each having acavity" in the face thereof which unite when the dies are together toform a single cavity;

a punch for upsetting the projecting por-' by longitudinally between thedies without severing the "same from the rod or enlarging its diameter,said dies being held together under lateral pressure while the firstmentioned unch is engaging the rod and separated s ightly when thesecond mentioned punch is forming the opening.

6.1a mechanism of the character described; companion dies, each of whichhas a cavity in its face which unite to form a single cavity when thedies are in contact with each other; a punch for upsetting that portionof a rod held/between the dies and projecting through said cavity; andanother punch for forming an opening in the upset portion that forcesthe material engaged thereby longitudinally between the dies withoutsevering the same from the rod, the

dies being held together under lateral pressure while the firstmentioned punch is en gaging the rod and separated slightly when thesecond punch is forming the opening, the

second metioned punch having a recess therein, into which the metalflows while the punch is in contact therewith, thereby forming aninter-meshing engagement between the punch and article which ismaintained during the withdrawal of the punch.

7. In mechanism of the character described; companion dies, each ofwhich has a cavity in its face which unite to form a single cavity whenthe dies are in contact with each other; a punch for upsetting thatportion of a rod held between the dies and projecting through saidcavity; and another punch having a surface thereon of lesscrosssectional area than that of the opening in the upset portion, the lastmentioned punch forming an opening in the upset portion and forcing thematerial engaged thereby longitudinally between the dies withoutsevering the same from the rod and also causing the metal to flow intothat portion of the punch of less cross sectional area than the diameterof the opening, whereby an intermeshing engagement is automaticallyformed between the punch and blank which is maintained during thewithdrawal of the article from "the die, the dies being held togetherunder lateral pressure while the first punch is operating upon the rod,and separated slightly while the second mentioned punch is in operation.A

8. In mechanism of the character de-I scribed; a pair of dies having acavity therein; a lurality of punches separate from each ct er; meansfor moving said punches so that the axis of each punch is successivelymoved into a position substantially coincident with the work: receivingopening in the dies, the first of said punches upsetting a projectingportion of a rod held between the dies to fill said cavity, another ofsaid punches scores the flash, if any, formed around the outer face ofthe upset port-ion, and another of said punches forming an opening inthe upset portion and severing the same from the rod, the movement ofthe rod between the dies being in a straight path toward said cavity andthen in a similar but a reverse straight path.

9. In mechanism of the character described; a pair of dies having acavity therein; a plurality of puhches separate from each other; means.for moving the punches so that'the axis of each punch is successivelyand substantially coincident with the work receiving opening in thedies, the first of said punches upsetting a projecting portion of a rodheld between the dies to fill said cavity, another of said punchesscores the flash, if any, formed around the outer face of the upsetportion, and another of said punches forming an opening in the upsetportion and severing the same from the rod, without enlarging thediameter thereof, said last mentioned punch also with drawing thearticle from the cavity, the movement of the rod through the dies beingintermittent but in a straight path substan tially parallel to the axisof the rod,

10.1n mechanism of the character dc scribed; a separable workholderhaving cavity therein; a plurality of punches; means for moving saidpunches so that the axis of each punch is successively and substantially coincident with the Work receir ing opening in theworkholder, the first of said punches upsetting a project-ing portion ofa rod held between the parts of the Workholder to fill said cavity,another of said punches scores the flash, if any, formed around theouter face of the upset portion, and another of said punches forming anopening in the upset portion and severing the same from the rod, thelast mentioned punch also withdrawing the article from the cavity; andmeans for stripping the article ing withdrawn after an upsettingoperation.

11. In mechanism for forming an article from a rod in a workholder;means for withdrawing the article so formed from said workholder,comprising a punch or the like; means for stripping the article fromsaid punch, comprising mechanism, independent of the workholder andpunch, having members movable radially from a common center and soformed as to have an opening around said common center, which membersyield when an article on a punch is moved therethrough in one directionbut remain rigid while the punch is being moved in the oppositedirection and by reason thereof stripping the article from the punch.

12. In mechanism for forming an article from a rod in a workholder;means for withdrawing the article so formed from said workholder,comprising a punch or the like; and means for stripping'the article fromsaid punch, comprising a mechanism having members slidable radially froma common center and so shaped as to. have an opening around said commoncenter, which members yield when an article on the punch is movedtherethrough in one direction but remain rigid while the punch is beingmoved in the opposite direction and by reason thereof stripping thearticle from the punch.

13. In mechanism for forming an article from a rod in a workholder;means for withgvrawing the article so formed from said orkholder,comprising a punch or the like; and means for stripping the article fromsaid punch, comprising a mechanism having members slidable radially froma common center and so formed as to have an opening around said commoncenter, which members yield when an article on a punch is movedtherethrough in one direction but remain rigid while the punch is beingmoved in the opposite direction and by reason thereof stripping thearticle from the punch.

14. In mechanism for formlng an article from a rod in a workholder;means for withdrawing the article so formed from the workholder,comprising a punch or the like; and means for stripping the article fromthe punch, comprising a mechanism having a frame, a plurality of slidesmounted therein about a common center, each slide being so formed thatwhen in contact with the other slides an opening is formed therebetween,and spring means for moving the slides in .one direction.

15. In mechanism for forming an article from a rod in a workholder;means for eaaase an opening in said upset portion which carries thearticle with it when moving away from the' workholder; and meansfor'stripping the article from the second mentioned punch comprlsmgamechanism having mem-- bcrsslidable radially'toward and away from acommon center and so formed as to provide an opening around said commoncenter, which members yield when an article with the punch is moved inonedirection through said opening and rigid while the punch is beingmoved in the opposite direction, the said artlcle passing through saidopening at approximately the same time that the first mentioned punchisupsetting the projecting'portion of the rod for the article next to beformed in the workholder.

17. In mechanism of the character described; a separable workholderhaving a cavity therein; a punch for upsetting the projecting portion ofa rod held between the parts of the workholder, to fill said cavity;another punch-separate from the first mentioned punch, forforming anopening in said upset portion that forces the material engaged therebybetween the parts of the workholder without severing the same from therod, the parts'of the workholder being held together under lateralpressure while the first mentioned punch is engaging the rod andseparated slightly when the second mentioned punch is forming theopening, this latter punch during its withdrawal carrying with it, andout of said cavity, the article formed therein; and-means for trimmingsaid article after it has been removed from the workholder.-

18. In mechanism of the character described; a separable workholderhaving a cavity therein; a punch for upsetting the projecting portion ofa rod held between the parts of the workholder, to fill said cavity;another punch separate from the first mentioned punch, for forming anopening in said upset portion that forces the material engaged therebybetween the parts of the workholder without severing the same from therod, the parts of the workholder being held together under lateralpressure while the first mentioned punch is engaging the rod andseparated slightly whenthe second mentioned punch is forming theopening, the second mentioned punch during its withdrawal carrying withit, and out of said cavity,

the article formed therein; and means for trimming said article after ithas been removed from the workholder at approximately the same time thatthe first mentioned punch is upsetting the projecting portion of the rodfor the article next to be formed.

19. In mechanism of the character described; a separable workholderhaving a cavity therein; a punch for upsetting the projecting portion ofa rod held between the parts of the workholder, to fill said cavity;another punch separate from the firstmentioned punch, for forming anopening in said upset portion that forces the material engaged therebybetween the parts of the Workholder without severing the same from therod, the parts .of the workholder being held together under lateralpressure while the first mentioned punch is engaging the rodandseparated slightly when the lastmentioned punch is forming theopening; and means for applying pressure to that face of the articleexposed at the end of the punch after the same has been removed from thecavity. I

20. in mechanism of the character described; a separable workholderhaving a cavity therein; a punch for upsetting the projecting portion ofa rod held betweenthc parts of the workholder, to fill said cavity;another punch separate from the first mentioned punch, for forming anopening 1n said upset portion that forces the material engaged therebybetween the parts of the workholder without severing thesame from therod, the parts of the workholder being held together under lateralpressure while the first mentioned punch is engaging the rod andseparated slightly when the last mentioned punch is forming the opening,and comprising a die, which engages and applies pressure to the articlewhile on the punch that withdrew the same from said cavity.

21. In mechanism of the character described; a separable Worhholderhaving a cavity therein; a punch for upsetting the projecting portion ofa rod held between the parts of the wonkholder, to fill said cavity;another punch separate from the first mentioned punch for forming anopening in said upset portion that forces the material engaged therebybetween the parts of the workholder without severing the same from therod, the parts of the workholder being held together under lateralpressure while the first mentioned punch is engaging the rod andseparated slightly when the last mentioned punch is forming the opening,the punch last referred to during its Withdrawal carrying with it, andout of its cavity, the article formed therein; means for trimming saidarticle after it has been removed from the workholder; and die means forapplying pressure to one face of the article after the same has beenremoved from the cavity, the axes of the trimming and die means beingsubstantially coincident with each other.

22. In mechanism for forming an article from a rod in a workholder;means for withdrawing the article so formed from said workholder,comprising a punch orthe like; means for stripping the article from saidpunch comprising a mechanism having members movable radially from acommon center and so formed as to have an opening around said commoncenter, which members yield when an article on a punch is movedtherethrough in one direction but remain rigid while the punch is beingmoved in the opposite direction and by reason thereof stripping thearticle from the punch; means for trimming said article after it hasbeen removed from the workholder; and die means for applying pressure toone face of the article after the same has been removed from the cavity,the axes of the trimming die, die means and opening in the strippermechanism being substantially coincident with each other.

23. In mechanism for forming an article from a rod in a workholder;means for withdrawing the article so formed from said workholder,con'iprising a punch or the like; means for stripping the article fromsaid punch, comprising mechanism having members movable radially from acommon center and so formed as to have an opening around said. commoncenter, which members yield when an article on a punch is movedtherethrough in one direction but remain rigid while the punch is beingmoved in the opposite direction and by reason thereof stripping thearticle from the punch; means for trimming said article after it hasbeen removed from the workholder; and die means for applying pressure toone face of the article after the same has been removed from the cavity,the axes of the trimming means, pressure die and opening in the strippermechanism being substantially coincident with each other, with thestripper mechanism located between the trimming means and pressure dies.

24. In mechanism of the character described; a separable workhold-erhaving a cavity therein; a solid punch for upsetting the projectingportion of a rod between the parts of the workholder to fill saidcavity; another solid punch separate from the first mentioned punch forforming an opening in said upset portion that forces the materialengaged thereby between the parts of the workholder without severing thesame from the rod the parts of the workholder being held together underlateral pressure while the first mentioned punch is engaging the rod andseparated slightly when the second mentioned punch is forming theooem'ng:

I and means for moving said punches whereby they areeach successivelymovedinto and out of a-position wherein their axes are co-, incidentwith that of the said cavity.

25. In apparatus of the character de: scribed; companion dies movabletoward and away from each other; and means for intermittently feeding arod between said,

dies, said feed mechanism permitting a limited reverse'movement of therod between the dies.

26. In apparatus of the character described; die mechanism; and meansfor intermittently feeding a nod through the die mechanism, comprisingin part -companion feed rolls, arock member operatively connectedwithone of the rolls, and a member through which motion is imparted to therock member, said member being, so connected with the rock member thatthe latter may have independent movement relatively thereto.

27. In apparatus of the character described; die mechanism; and meansfor intermittently feeding a rod through the die mechanism, comprisingin part companion feed rolls, a rock member operatively contermittentlyfeeding a rod through the die mechanism comprising in part companionother of-said members, and formin nected with one of the rolls, a memberthrough which motion is imparted to the rock member, and a pin fixed inone of the members and projecting through a slot in the other of saidmembers, and forming a slip joint connection therebetween.

30. In apparatus of the character described; die mechanism; means forintermittently feeding a rod through the die mechanism, comprising inpart companion .7

feed rolls; a rock member operatively con nected with one of the rolls,a member through which motion is imparted to the rock member, a pinfixed in one of the members and projecting through a slot in the a slipjoint connection therebetween; and spring fixed to both of said membersthat exerts its tension so as to hold the said pin at one of said slots.

1 31. In mechanism of the character described, having a workholder; feedmeans for advancing a rod therethrough; and means for performing anoperation upon said rod that will cause the same to pass through saidworkholder in a direction opposite to the aforesaid feed mox'ement, thefeed means being so arranged as to yield sufliciently to permit thisreverse movement.

In testimony whereof, I have hereuntoaifixed my signature.

RICHARD LESTER WILCOX.

